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(No Model) 6 sheets-411ml.

F. HOYER. PAPER FEEDING DEVICE.

Patented Feb. 26. 1895.

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F. HOYER. PAPER FEEDING DEVICE.

No, 534,717. Pate ted Feb. 26,1895.

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PAPER FEEDING DEVICE.

No. 534,717. Patented Feb. 26' 1895.

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P. HO'YEB. PAPER FEEDING DEVICE.

No. 534,717. Patented Feb. 26, 1895.

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F. HOYER. PAPER FEEDING DEVICE.

No. 534,717. Patented Feb. 26;, 1895.

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FREDERICK HOYER, OF LIVERPOOL,

PATENT OFFICE.

ENGLAND.

PAPER-FEEDI NG DEVICE.

SPECIFICATION forming part of Letters Patent No. 534,717, dated February 26, 1895.

Application filed N b 25,1887, g m N 256,053. (No 61 1,) Patented in England January 28, 1886. No. 1,032 in France October 30,1886 No. 179,357; in Belgium November 2, 1886,1103. 75,071, and in Germany November 10, 1886,

To all whom it may concern:

Be it known that l, FREDERICK HOYER, engineer, a subject of the Queen of Great Britain, and a resident of the city of Liverpool,

'shown at Fig. 1.

in the county of Lancaster, England, have invented new and useful improvements in feeding paper or other material to printing and other machines and mechanism employed therefor, (for which I have obtained a patent in Great Britain, No. 1,032, bearing date January 23,1886; a patentin France, No.179,357, dated October 30,1886; a patent in Belgium,

No. 75,071, dated November 2, 1886, and a patent in the German Empire, No. 40,611, dated November 10, 1886,) of which the following is a specification.

My invention has for its object certain im provements in feeding sheets of paper, or other material to printing and other like machines and apparatus employed therefor whereby the action of such apparatus is rendered more efiective and reliable and the cost is reduced.

The following is a description of my invention in such full, clear and distinct language asto enable any one skilled in the art to which it belongs to put the same into practice, reference being bad to the'accompanying drawings which make a part of this specification applied thereto, for feeding sheets of paperto printing machines. Fig. 2 is a side elevation showing the reverse side of the apparatus Fig. 3 is a plan of the apparatus. Fig. 4 is a sectional elevation of the apparatus. Fig. 5 is an elevation of the gear for operating the delivery tapes. Fig. 5 is an end view of the gear for operating the delivery tapes shown in Fig. 5. Fig. 6 is an elevation showing the suction chamber. Fig. 7 is a section of the suction chamber through X X Fig. 6. Fig. 8 is an elevation of' the front blowing chamber. Fig. 9 is a sectional end view of same showing the air valve and gear. Fig. 10 is a plan of the blowing chamber. Fig. 11 is aperspect-ive view of a portion of the front suction chamber. Fig. 12 is a section through XXFig.11. Fig. 13 is a side elevation of the side registering device. Fig.

14 is an end view of Fig. 13. Fig. 15 is a plan of Fig. 13.

My invention consists of certain novel methods and certain novel parts and combinations of parts specified in the concluding claims.

The class of machine with which the above set forth appliances are used is thatin which the sheets of paper are lifted sheet by sheet by suction from a pile of paper, and fed by tapes as lifted to the printing, or other machine. My said improved appliances are all mounted on a suitable frame, working in conjunction with an air exhaust and blowing apparatus and valves and rods, levers, cams, eccentrics, driving shafts and pulleys, as usual and common in this type of apparatus.

I will now describe the apparatus and the appliances and their features, reference being had to the drawings.

A is the framework of the apparatus. B is the exhaust fan. 0 is the exhaust chest connected to the fan B by the duct 0 and connected to the lifting suction chamber a by the expanding duct O D is the main shaft of theapparatus. D is the bevel wheel gearing by which motion is imparted to the main shaft D. E is the feed table of the apparatus. These parts are common to machines of this type.

I will now describethe apparatus and the appliances according to my present invention.

b is a front blowing or blast chest. This consists of a chamber having suitable air supplying ducts from the blowing fan and provided with a valve 1) for controlling the blast of air. This blast of air is obtained from the discharge of the exhaust fan '13 through the duct B. z

The front, or blowing face of the chamber b is constructed as shownin Figs. 8, 9-and 10, with diagonal openings or leads, being blowing orifices b whereby the blast is delivered in streams converging toward eachoiher.

The blowing face of the chamber 1) extends across the whole machine and is of greater width than the pile of paper d to be acted upon so that the outside currents of the blast of the pile of paper 61 are, when trimmed by a guillotine, often burred into each other or curled up or down and the sheets are thus difficult of separation.

By causing the blast of air from the blowing chamber b to strike the pile of paper d diagonally on the side of the front cornersas well as on the front, I secure a means of striking the edges of the pile which may not be thus burred together, or curled up, or down and I thus gain a passage for the separating blast between every sheet.

The upper portion of the sheet blowing face of the chamber 1), namely the portion which acts on the paper while being lifted by the suction cylinder a is provided with interspaced blowing orifices b namely, the orifices c are so placed that the lower row of these orifices b act only on a portion of the edge of the paper d, and the upper orifices 19 act on the other portions of theedge of the paper d, thus giving an intermediately directed blast. The diagonal nature of the leads is confined to the orifices b the orifices having direct leads.

The blast of air through the whole of the face of the blowing chamber 1) is of an intermittent or pulse nature, which is effected by the valve 1) operated by the rod and lever and spring pawl connection I). This is worked by a cam 19 on the main shaft D, which when in operation opens and closes the valve 1) andso allows the air to escape when open. This action causes the sheets to rise and fall on the pile and by this motion a better separation of the sheets is effected.

The top of the chest I) is partitioned off at b to form asuction chest connected to chest 0.

e is the table for carrying the pile of paper.

f is the back gage on the table c for the pile of paper 61. When feeding paper apt to break when buckled I make this back gage fas shown at Figs. 1, 2 and 4, with the vertical part hinged at f and I work itfrom the'shaft n by the rodf so that it may have a backward rocking movement about the hinge f so that when treating classes of paper which are particularly apt to break when buckled, the upper part of the back gage will have been moved away from the edges of the upper sheets of the pile when the upper sheet is moved toward said gage, thus overcoming the danger of the paper breaking.

g is a separator for the rear edges of the pile of paper d. It consists of a cross bar which rests on the top of the paper at at the rear end of the pile. This separator is carried by the arm g on the shaft 9 by a jawjoint which is made with so much slackness as to allow of the bar 9 having asmall amount of movement in the horizontal plane. The shaft 9 receives a rocking 'motion from the lever e to which it is connected by the rod This rocking motion ofthe shaft gives the separator g an intermittent upward movement and by attaching the separator 9 off its center to the arm 9 as shown, and loosely as just specified it has also a slight forward rocking movement when moved onto and off the pile which separates the top sheet from the sheet next below on the pile. The separator g also acts as a gage weight and brings into action the ratchet gear 6 by means of the rod e and the slotted arm e The lever 6 receives motion from the cam e on the main shaft D. The table e is actuated or raised to compensate for the feed of paper by means of the screws e, the feeding action of which is obtainedbymeans of thebevel wheel gear e carried by the shaft 6 operated by the ratchet gear 6 receiving motion from the rocking arm 6 and the rod 6 which'receives motion from the lever e and the cam c on the main shaft D. This action is also utilized for operating the tapes and is hereinafter set forth particularly with reference to Figs. 5 and 5. Thus the table is raised by the action of the cam 6* to compensate for the feed of paper.

h is a rocking bar, or guard on the front of the blowing chamber. It is carried and worked by the bell crank levers h and the rod 7L2 from the lever j. As the suction chamber a moves back it is raised, and returns to its normal-horizontal position as the suction chamber a passes forward to deliver the sheet of paper. The lifting chamber a consists of a chamber, or casing which we tends across the apparatus. The under side of the chamber a is formed with a lip a curled up at the front, the bottom of which is provided with a suction orifice, or orifices. One end of the suction chamber a is c011- nected to the expanding duct C and thereby to the suction chamber 0 and to the exhaust fan B. The suction chamber a is carried by the two horizontal brackets c' the outer ends of which are carried by the vertical levers j and the other ends of which have horizontal movement on the vertical carrying brackets is which have vertical movement. The horizontal movement of the brackets 'i and the suction lifting chamber a is caused by the cam Z on the shaft D which imparts movement to the lever m and through the shaft 12 to the levers j and the brackets 11. Vertical movement is imparted to the brackets by the levers e which are worked by the cams e on the main shaft D. The suction chamber is placed immediately behind the blowing chest Z) and over the front edge of the pile of paper d, the sheets of which have to be lifted. Assume the suction to be on and the upper sheet of the pile of paper to have been drawn by such suction to the upper lip a of the chamber a, the chamber a receives a backward movement by the action of the cam Z and the leverj, the suction chamber a taking with it the upper sheet of the pile of paper d and slightly buckling it over the IIO pile. This buckling together with the di- I agonal blast through the orifices b of the chambers b effectually separate the upper sheets of paper. The suction chamber a with the sheet of paper adhering is then lifted by an upward movement of the bracket k obtained from the levers e and cams 6 After being raised the chamber a receives a forward horizontal movement up to the face of the blowing chest, when there is a momentary rest given by reason of the shape of the cams Z to allow any sheet which may be adhering to drop off (or this rest may be given when the sheet has been lifted to the full height before it moves forward to the feeding table). It then has a second vertical movement up and past the face of the blowing chest, during which the edge of the pa- .per is operated upon by the blast from the the pile d, which is further insured by an under suction fromthe chamber 1) through the orifices b", the chamber 11 being connected .by a duct 0 to the chest 0. After the upward movement past the blowing chest I), the lifting suction chamber a has a further horizontal. movementforward which brings the leading edge of the sheet of paper onto the tapes t of the feed table E and on the suction being cut off from the lifting chamber a, the sheet of paper is carried by the tapes t to the printing machine.

To cause the sheets of paper to adhere to the delivery tapes t and to insure their carrying action I provide a second suction chamher, or trough u which extends across the ma- 4o.

chine just behind the table E. This trough -11. is open at the top to the under surface of ,sheet of paper over the suction trough u, the

suction being cut off from the lifting chamher a and at the same instant the suction be- '-ing opened to'the suction trough u, the latter,

down the table to the front register and also acting on the sheet delivered onto the tapes t which pass over the trough u, will draw the sheet of paper down against the tapes t which ing gear. J. The suction trough u is connected to the suction chamber 0 by the duct 0 and is provided with orifices u on the under side of the regulating shutter valve UP. The top of the trough u is provided at each end with adjustable shutters u to enable the width of the open portion of the trough to be regulated to suit different widths of paper.

The suction through the duct 0 is regulated by a valve and spring 0 which is worked by a rod C operated by a cam on the main shaft The sheet of paper is then caused to move comes under the action of the side register hereinafter described. In some instances, for example in lithographicprinting, the table E respects to the suction trough u. This suction trough holds the paper and prevents the papers buckling by coming too suddenly against the ordinary printing machine front register.

The front side register by which the sheets are adjusted, or registered sidewise, is illustrated in detail in Figs. 13, 14 and 15. It consists of a bracket '0 mounted and adapted to move laterally on the shafts or rods 1;, 0 held and supported by the table E by brackets 'U2 fixed thereon. The bracket 2; has a foot piece 10 which comes in contact with the surface of the table E, that is, just touches it. The attachment of the foot-piece 20 with the bracket 0 is made by a horizontal upper flange thereon fitting in a corresponding slot 5 in the bracket '11 and is held frictionally by being a tight fit therein. The adjustmentis made by thumb set screws it working and screwing through the end of the projecting part of the bracket '12 in which the foot-piece 10 is supported. By operating these thumb screw h the foot piece 10 can be pressed outward, or adjusted in that direction to the requir d degree, while the opposite movement into th slot 5, is done by pressing the foot-piece inward with the'hand. By this the finest djustment of the device and registering of th paper can be given; which is very import t in color printing where severalcolors hav t be put upon the same sheet, and the foll ing colors have to fall in their rightpl The base of the foot-piece 10 as will be Seen, has a rise at the leading end and a fall f the top of said rise to the back edge. Th

paper passing down the table meets the rise and passes up over same, thereby causing one edge or side of the sheet to be raised off th table, thereby enabling the sheet to be more readily moved laterally. The leading edge of the foot plate and the back edge thereof, just touch the surface ofv the table E. The gripper by which the sheet of paper is gripped and held on the foot piece 10 is designated w and this gripper is supported by a boss of the bracket 12 through which its shaft works, and said shaft is connected to the transverse shaft 0 by a lever 12 mounted on the shaft '0 and a connecting rod connecting the end thereof with the upper end of said gripper rod. The shaft 0' is rocked or vibrated in its bearings by the cam w and lever w; and thus at each. rotation of said cam the shaft o is vibrated in one direction and then back, and in each action the gripper 10 is lowered and raised onto and off the paper on the foot-piece 10 bythe means just described.

The shaft t has a to and fro motion longitudinally through its beariugspnam ely, the

IIO

'the shaft D, and connecting rod 3.

' piece 20 brackets 0 this motion being imparted to it by the crank 2 which is connected to the ends of said shaft, and is operated by the cam Zon The bracket 0 when adjusted to the right position along the shafts v '0 is fixed in position by a'set screw (not shown in the drawings) which passes through the boss of said bracket and presses on the shaft v ,and'so grips it.

The action of the apparatus is as follows: Each sheet as it passes down the table E passes over the foot piece 10 of the registering device, against and by which it is to be registered sidewise, and travels forward until it reaches the ordinary stops of the printing machine, which, of course, in the ordinary way registers the front edge of the sheets. When the sheet has arrived at this position, the shaft c which carries the registering apparatus, is given alongitudinal movement by the means above described, whereby the sheet is first pushed outward by the edge which will be bearing upon the vertical side of the foot- Then the gripper 10 is brought down upon it by the means above described, whereby the sheet is gripped upon the footpiece 20 and then the Whole device is brought back again by the reverse movement of the shaft 12 and pulled sidewise and registered in the right position, prior to its being removed by the printing machine mechanism in the ordinary way. When the leading edge of the sheet has been caught by the ordinary grippers of the printing machine in the ordinary way, the side registering'gripper w is raised and releases the sheet, which is then drawn off by the printing machine. As each successive sheet is fed forward down the table E, all the operations just described are performed. By this arrangement I combine the pushing, or drawing motion for side registration and for use as a holding device, and I provide a means whereby the sheets of paper are to be held in position after registration for delivery to the printing machine.

As previously set forth J is the driver for the tape rollers which receive motion as hereinafter described and communicates such motion to the driving pulley J (mounted in the tape roller shaft 25') through a belt J. The tapes 1/, run on rollers 25 mountedon the shaft t in the ordinary way. The tapes receive intermittent motion, such motion being imparted when each sheet is fed onto them from the suction chamber a and are stopped when the sheet has been registered by the front side registers and during the time just prior to the sheet being taken away by the printing, or other like machine. The mechanism by which the alternate movement and stoppage is effected consists of the gear shown in Figs. 5 and 5 in which J is the driver pulley placed outside the frame of the machine and mounted over a shaft j, on the other end of which a toothed wheelj is keyed. This toothed wheelj gears into a second toothed wheelj This wheel 3' is mounted loosely ti 1 k 534,717

on the main shaft D. To the side of the wheel j is cast a ringj round which takes a strap The strap is is carried by a bell crank lever 70 (in a similar manner to a winch brake strap) which is mounted in the end of the lever 10 keyed to the main shaft D and revolves with it. On the end of the bell crank lever k there is a roller 10 which Works at certain portions of its revolutions on the inner surface of a guide which is mostly of circular form but has a splayed out entrance as shown.

The operation is as follows: As soon as the roller 70* of the bell crank 162 in its revolution reaches the circular portion of the guide 70 the strap 70 grips the rim 7' and carries it round with it and so the wheels j and 7' \Vhen the roller leaves the guide the tension and pressure of the strap on the surface of the rim j are released and the motion of the wheel 3' and so the tapes are arrested; This cessation is continuous until the roller 70 again enters the guide it and is timed to take place at the time when the sheet is registered and ready to be taken up by the printing machine.

I have shown a side registeringdevice at each side of the machine. The object of this construction is that in printing the printer sometimes requires to register at one side and sometimes at the other side. when he requires to register on the right hand side he uses the right hand register and when he requires to register on the left hand side he uses the left hand register.

Having thus described my invention, What I claim is 1. The method of separating sheets of paper in a pile, for feeding such sheets from a pile, which consists in subjecting the front edges and corners of the pile of paper to a diagonal blast of air, whereby their separation is facilitated.

2. In a machine for feeding sheets of paper from a pile, a pneumatic blast chest having three tiers of blast apertures, the lower one of such tiers being adapted to direct such blast diagonally on the edges of the pile combined with a table for supporting the pile of paper, lifting means acting on the upper sheet to raise its front end successively in front of the second and third tier of said apparatus and means for producing the blast.

3. The method of separating sheets of paper in a pile, for feeding-such sheets from the pile, which consists in subjecting the pile of paper to an intermittent or pulsatory blast of air directed diagouallyonto the front corners and edges of the pile of paper.

4. The method of feeding separate sheets of paper from a pile, which consists in first pneumatically lifting a sheet; then imparting to it a backward movement over the pile of paper; then an intermittent upward movement while it is subjected to an intermittent blast of air and a forward movement whereby the sheet is delivered to the conveying or feeding mechanism.

For example,

IIO

6. In a machine for feeding sheets of paper from a pile a pneumatic blast chest having converging apertures adapted to direct the blastin converging lines upon the pile, means [5 for supporting the pile of paper and means for producing the blast.

FREDERICK I-IOYER.

Witnesses:

FREDERICK JOHN CHEESBROUGH, ERNEST R. RoYs'roN. 

